Emergency-brake.



UNITED STATES PATEN FFICE.

LAUST K. ANDERSON, OE VJ'EST ALLIS, IVISCONSIN.

EMERGENCY-BRAKE.

Application led September 1G, 1513.

To all whom 'it may concern Be it known that I, LAUsT K. ANDERSON, citizen of Denmark, Europe, residing at West Allis, in the county otl Milwaukee and State of llvisconsin, have invented certain new and useful Improvements in Emergency-Brakes, of which the following is a specification.

This invention relates to vehicles generally, and the principal object ot' the invention is to provide a safety stop or emergency brake which will enable the vehicle to be stopped instantly to prevent` collisions, skidding or other vehicle trouble.

A further object of the invention isJ to render the mechanism operative through the medium of a suitable bumper at the forward end of the vehicle.

A still further object of the invention contemplates the provision ot' specially devised brake mechanism wherein an oscillatable brake shoe may be swung into and out ot engagement with the ground over which the vehicle is traveling and directly beneath the power wheels o't the vehicle to slightly elevate the latter and disengage the wheels from the ground, the wheels when elevated adapted to continue rotation without im` parting movement to the vehicle and with` out injury to the driving mechanism thereof.

The invention still further resides in the 'provision of means in the nature otl a suitable drum, cylinder and piston for withdrawing the brake shoe from engagement with the ground when it is desired that the machine or vehicle should again be driven in a forward direction.

The above and additional objects are accomplished by such means are illustrated in their preferred embodiment in the accompanying drawings, described in the .tollowing specification and then more particularly pointed out in the claims which are appended hereto and form a part o this application.

In describing my invention in detail reference will be had to the accompanying drawings, wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a side elevation of a vehicle trame with the mechanism comprising fmy inventi on attached thereto and swung into Specification of Letters Patent.

Patented N ov. 17, 1914.

Serial No, 780,054.

end thereof, the latter being carried by the rear axle Ll. Keyed or otherwise fixetllv se` cured to the axle is a suitable sleeve the latter being inclosed by a second sleeve 6 loosely mounted thereupon. Embracing the second sleeve 6 is a band or collar 7 having an arm 8 formed integrally therewith, the latter adapted to extend to a-point adjacent the periphery of the wheels 3. Either formed integrally with the arm S or secured thereto in any suitable manner is a brake shoe 9, which when in operative position, is swung into engagement with the ground over which the vehicle is traveling to slightly elevate the wheels 3 as illustrated to advantage in Fig. 1 oi the drawings.

A casing 10 is arranged to inclose the band or collar 7 of the brake mechanism, the said casing having an arcuate .slot or opening 11 formed therein through which the arm 8 of the brake shoe extends. An odset portion 12 is formed integrally with the casing 10, adjacent the opening 11, within which a spring 13 is seated the latter being disposed to embrace a suitable pawl 1l having a flange 15 formed thereupon against which one end of the spring 13 abuis. A shoulder 16 is formed upon the band or collar 7 l an enlargement 1T, the said shoulder being normally engaged by the pawl 1t to maintain the brake shoe 9 out ot' engagement with the ground. To swing the said shoe into operative position, a spring 18 is provided, one end of the spring being secured to the arm 8 of the shoe and the opposite end to a. lug 19 formed upon the inner pe.

. pawl lever 34 is pivoted as the latter being supported through the medium of a braclrct depending from the underside ci" the said trame l. The said operating lever Q-i is pivoted centrally at the point :23, one end ot the leverbe'ing connected as at to a suitable flexible member 27, the opposite end of which lis secured as A roller or pulley 29 over which the iexible ln emergency cases, the said operating lever 2J: is actuated through the medium of abumper S0 mounted for sliding movement at the forward end ot the vehicle by means o'f bearings 31 provided therefor, the bearings supporting suitable rods 3Q. the forward ends of which are connected to the bumper 30 and the opposite ends to the said lever A as at 33.

'In operation, when it is desired that the emergency brake should be applied, the toot lever 20 is depressed thereby causing the operating lever Qi to be actuated and the A 1i withdrawn 'lrom engagement with the shoulder 16 of the band 7, the spring 18, taken in connection with the weight of the shoev9, causing the latter to fall 'or swing into engagement with the ground directly beneath the power wheels causing .the latter to be slightly elevated and instantly stopping the forward movement of the machine without in any way interfering with the driving power or mechanism of the said wheels. rl`he said lever 9A may be also actuated by the sliding movement of the bumper designated as an entirety by the in ay be provided,

numeral 30, the 'operation in this instance being obvious upon application to the drawing.

Having described fully the manner in which the brake shoe 9 is swung into operative position, it now remains to describe the manner in which the same is withdrawn or swung into inoperative position. A hand at to a bracket or other similar element 36, the said lever 34 terminating at one end in a segmental rack yorquadrant 37, the teeth of which mesh into a pinion 'mounted tor rotation upon and with a shaft 259, the latter having a drum 40 mounted thereupon over which a cable or other iiexible element 41 is wound, one end of the said cable being secured to a piston 4Q disposed within a suitable cylinder 43 supported beneath the vehicle frame by means of a casting t. A piston rod 45 is secured to the piston 4'2 at one end and to the brake shoe 9 at the other thereby causing the said shoe tobe withdrawn from engagement with the ground as the said piston 42 is moved upwardly or forwardly within the cylinder.

' A. spring 46' is interposed between the piston 4:2 and the lower or rear closed end of the cylinder 435m serve as cushion for the vformer during the operation of the brake mechanism above'. described.

3 or" the vehicle,

I brake shoe,

,Ylien it is desired that the shoe 9 be withdrawn from engagement vwith the ground shown in Fig. 2 to the position. shown'in Fig. l of the drawings, thereby automatically conditioning the said lever to perm-it disengagement of the shoe 9` when necessary; and that the operation ot' the bra'lic shoe may be operated either by the manipulation ot the foot'lever 20 or thebumper 30 as hereinbeiiore fully set forth.

ln reduction to practice, l vhave that the -form ot' my invention,

yfound illustrated Q in the drawings and referred to in the abogveV l description, as the preferred embodiment'. is the most efficient- Iand practical; yet realizing that thecendit'ions concurrent with the adoption otl my device will necessarily vary', l desire to emphasize the fact that various minor changes in details ot construct-ion, proportion "and arrangement ot parts may be resorted to,when required, without sacriicing any ot the advantages of my invention, as defined in the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. An emergency brake for vehicles including a brakeshoe, a casing therefor having an opening'ormed therein through which said shoes Leaten. s, a pawl carried by said casingadap'ted to normally engage sai'd shoe to maintain, the latter in inoperative position, and -means connected to/the said pawl for actuating the'latte-r and releasing said shoe, as and for thepurpose set forth.

2. In an .emergency brake for vehicles, -a a casing therefor, said casing vhav/jing an opening through which said shoe extends. a movable pawl carried b v said casing and normally engaging said shoe to maintain the'same inoperative, a bumper' projecting forwardly of the vehicle. an opto normally engage the said shoe to maintain the latter in an inoperative position, and means including a plurality of links and levers connected to the said paWl for actuating the latter and releasing the said shoe, as and for the purpose set forth.

Li. ln combination with a vehicle, an emergency brake therefor including a movable brake shoe carried by one of the axles i of the said vehicle, a casing having an openn ing formed therein through which the said shoe extends, a spring actuated pawl carried by the said casing adapted to normally engage a shoulder formed upon the said shoe to normally maintain the latter in an inoperative position, a spring disposed within 'the said casing and connected to the said shoe for swinging the latter into operative position when released by the said pawl, and means including a plurality'of links and levers carried by the said vehicle and connected to the said pawl for actuating the latter, as and for the purpose set forth.

5. ln combination with a wheeled vehicle,

' brake mechanism therefor including a band carried by one of the axles of the said vehicle, an arm depending from the said band, a brake shoe carried by the said arm, a casing arranged to embrace the said band, the said casing having an opening formed therein through which the said arm extends, a spring actuated pawl carried by the said casing adapted to normally engage a shoulder formed upon the said band to maintain the said shoe in an inoperative position, a spring disposed within the said casing and connected to the said arm for swinging the said shoe into operative position when released by the said pawl and a plurality of links and levers carried by the said vehicle and connected to the said pawl for actuating the latter, as and for the purpose set forth` 6. An emergency brake for vehicles including a brake slice oscillatable about one of the vehicle axles to raise and lower the wheels upon said axle respectively out of and into engagement with the ground, a lug projecting from said shoe, a spring pressed pawl normally engaging said lug to render the shoe inoperative, spring means engaging the shoe for holding the lug in engagement with the pawl, means actuatable to withdraw the pawl from engagement with the shoe, and means actuatable to withdraw the shoe from engagement with the ground when actuated, as and for the purpose set forth.

In testimony whereof` l aiix my signature in presence of two witnesses.

LAUST K. ANDERSON.

Vitnesses:

A. G. Koersen, J. L. CHRIs'rENsnN. 

